*{ margin:0px; padding:0px;}  
.up{
	width : 100% ;
    height:770px;
	background :url(../images/bg.jpg);
}
.center{
	position:absolute;
	width : 100% ;
	top:180px;
	left:0px;
	height:400px;
	background :url(../images/centerBg_02.jpg);
}
.down{
	width : 100% ;
    height:30px;
	background-color:black;
}
.login{
	position:absolute;
	top:60px;
	left:740px;
	width : 463px ;
	height:306px;
	background :url(../images/login_03.jpg);
}